public override bool Equals(object obj)
{
SetItem r = obj as SetItem;
if (r == null)
{
return(false);
}
return(this == r);
}
private void FireWildCards(LinkedListNode <ICondition> nextcondition)
{
// set (a b c)
// set (a b ?x)
if (!_variables.Contains(_relationship.Set))
{
// if the variable does not exist we need to
// find the value within each relationship
// and fire the children
_variables.Add(_relationship.Set);
foreach (Relationship r in _knowledge[_relationship.Key])
{
if (r.Set.IsMatchTo(_relationship.Set))
{
for (int i = 0; i < _relationship.Set.Count; i++)
{
SetItem item = _relationship.Set[i];
if (item.IsWildcard)
{
_variables[item.Variable.ID].Value = r.Set[i].Value;
}
}
FireNextCondition(nextcondition);
}
}
_variables.Remove(_relationship.Set);
}
else
{
// if the variable does exist, we need to
// substitute the value
// and fire the children
Fire(nextcondition, _relationship.Clone());
}
}